National Security Inspectorate (NSI)

The leading certification body for the UK's security & fire sector. 2,000+ approved companies are rigorously audited to verify competence and service excellence

[National Security Inspectorate (NSI) @NSI_Approved]

🚨 Nominations are open for the 2027 UK OSPAs! 🏆

Celebrate excellence across the UK security industry. Entry is free, self and third-party nominations are welcome, and multiple categories can be entered.

📅 Deadline: 6 October 2026

Enter now: https://t.co/gsHQsVOwSx

[National Security Inspectorate (NSI) @NSI_Approved]

Congratulations to the companies that successfully achieved NSI recertification last month. 👏

For more info: https://t.co/Hw3XnY8NJy

#SecurityStandards

[National Security Inspectorate (NSI) @NSI_Approved]

🚀 Welcoming the newest NSI certified companies We’re delighted to celebrate the latest organisations to achieve NSI certification, joining our trusted community of industry leaders in security and fire safety.

For more information: https://t.co/yoWO7SaoOi
#NSICertified

[National Security Inspectorate (NSI) @NSI_Approved]

Don't miss @psimagazine's 'Meet the NSI Installer' interview with Derek May, Quality Manager of @Convergint Technologies UK, where he shares his views on the industry and the value of third-party certification.
Find out more: https://t.co/JrD5IMfj7a

[National Security Inspectorate (NSI) @NSI_Approved]

🚀 Welcoming the newest NSI certified companies We’re delighted to celebrate the latest organisations to achieve NSI certification, joining our trusted community of industry leaders in security and fire safety.

For more information: https://t.co/vv1lvrCTGW

#NSICertified

[National Security Inspectorate (NSI) @NSI_Approved]

Congratulations to the companies that successfully achieved NSI recertification last month. 👏
For more info: https://t.co/u7Pcukw551
#SecurityStandards

[National Security Inspectorate (NSI) @NSI_Approved]

This Pride Month, NSI proudly supports the LGBTQ+ community and celebrates the diversity that strengthens our industry.

As Pride is celebrated across the UK this June, we recognise the positive impact that diversity and inclusion have on our profession and communities .🌈

[National Security Inspectorate (NSI) @NSI_Approved]

🚨 Stay up to date with the latest standards in intruder alarm systems 🚨

Why attend?
✔ Understand the latest PD6662:2017 requirements
✔ Improve compliance and best practice knowledge

✅ 18th June
✅ 20th August

🔗 Book now: https://t.co/hHYDGePuTh

[National Security Inspectorate (NSI) @NSI_Approved]

Congratulations to the companies that successfully achieved NSI recertification last month. 👏

For more info: https://t.co/V1rzeIFdOX
#SecurityStandards

[National Security Inspectorate (NSI) @NSI_Approved]

Don't miss @psimagazine's 'Meet the NSI Installer' interview with Mehul Gusani, Principal Consultant of North, where he shares his views on the industry and the value of third-party certification.
Find out more: https://t.co/LuEi3QHIbK

[National Security Inspectorate (NSI) @NSI_Approved]

🚀 Welcoming the newest NSI certified companies We’re delighted to celebrate the latest organisations to achieve NSI certification, joining our trusted community of industry leaders in security and fire safety.

For more information: https://t.co/VcWLve1WAa
#NSICertified

[National Security Inspectorate (NSI) @NSI_Approved]

6 days to go! 🔥🔏

We will be at the Fire Safety Event & The Security Event 2026 (28–30 April, NEC Birmingham).

Visit us at Stand 5/F130 (TSE) & 4/H100 (FSE) to explore how certification boosts growth, credibility & compliance.

Register: https://t.co/MWleqWFuSD

[National Security Inspectorate (NSI) @NSI_Approved]

Don't miss @psimagazine's 'Meet the NSI Installer' interview with Nathan Douglas-Smith, Managing Director of @centurion_ltd_, where he shares his views on the industry and the value of third-party certification.
Find out more: https://t.co/OxbcA6NJ8Z

[National Security Inspectorate (NSI) @NSI_Approved]

Only a few places remaining… ⏳

Join our training course for practical, real world skills you can apply immediately.

🔹 Hands-on learning
🔹 Expert-led sessions

📅 12th May
📍 Maidenhead office

Secure your place today:
https://t.co/HNLAbn9gbL
#ProfessionalDevelopment

[National Security Inspectorate (NSI) @NSI_Approved]

🚀 Welcoming the newest NSI certified companies

We’re delighted to celebrate the latest organisations to achieve NSI certification, joining our trusted community of industry leaders in security and fire safety.
For more information: https://t.co/0xc1QUnYkV
#NSICertified

[National Security Inspectorate (NSI) @NSI_Approved]

Congratulations to the companies that successfully achieved NSI recertification last month. 👏

For more info: https://t.co/RPSw13CmF1

#SecurityStandards

[National Security Inspectorate (NSI) @NSI_Approved]

Celebrating a milestone worth recognising 👏

We’ve officially turned 55 over five decades of raising standards, building trust, and supporting a safer world. Proud of our legacy and the people behind it.

Here’s to the next chapter 📷
https://t.co/48mgUfjnAj

#Anniversary

[National Security Inspectorate (NSI) @NSI_Approved]

🚀 We’re hiring a People & Culture Lead! Full-time in Maidenhead.

Shape culture, attract top talent, and make a real impact. Strategic, hands-on, and a true business partner.

Info & apply 👉 https://t.co/dXSu8t9ub3

#Hiring #PeopleAndCulture #HRJobs #Maidenhead #JoinOurTeam

[National Security Inspectorate (NSI) @NSI_Approved]

The way organisations buy fire safety services is changing. Expectations are rising. Scrutiny is increasing. New research from NSI & BAFE reveals what decision makers really look for and it may challenge assumptions.

Read more 👉 https://t.co/cRbhCfhHPh
#FireSafety #UKFireSafety

[National Security Inspectorate (NSI) @NSI_Approved]

🔥 Level up your fire alarm design expertise 🔥

The BS 5839-1:2025 Best Practice course is ideal for fire safety professionals.

📚 Learn to apply design principles, improve reliability, reduce false alarms & produce compliant systems.

👉 https://t.co/5f2cPl0sfG

#FireSafety